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Finding the Fourth Proportional to 1,052.85, 1,452.11 and 679.87

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Solution

The fourth proportional to 1,052.85, 1,452.11 and 679.87 is: 937.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.85 : 1,452.11 = 679.87 : x
  2. Step 2: Convert to fraction form
    1,052.85/1,452.11 = 679.87/x
  3. Step 3: Cross multiply
    1,052.85x = 1,452.11 × 679.87
  4. Step 4: Simplify right side
    1,052.85x = 987,246.03
  5. Step 5: Solve for x
    x = 987,246.03/1,052.85
  6. Step 6: Final answer
    x = 937.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.